Supply system for locomotives.



PATBNTED MAR. 5, 1907.

A. P. DODGE. SUPPLY SYSTEM FOR LOCOMOTIVES.

APPLIOATION FILED MAY 10, 1904.

ms uonms PETERS cu., WASHINGTON, n. c

UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented March 5, 1907.

Application filed May 10, 1904. Serial No- 207.208.

To all whmn it may concern:

Be it known that I, ARTHUR PILLSBURY DODGE, a citizen of the UnitedStates, residing at New York, in the county and State of New York, haveinvented certain new and useful Improvements in Supply Systems forLocomotives, of which the following is a specification.

My invention comprises a system for supplying locomotives or otherengines with steam under high pressure.

My system includes in connection with the locomotive and itsengine-cylinders a supplemental storage-boiler, a supplemental fireboxindependent of the locomotive fire-box and surrounded by a water-chamberwith pipe connections between the supplemental boiler and water-chamber,and the enginecylinders having valves for controlling the steam-supply.

My system also includes a condenser connected with the exhaust of thecylinder, a driptank connected with the condenser, and a muffler tank orchamber connected by air or steam relief pipes with the condenser anddrip-tank, respectively, said relief-pipes having a check valve orvalves therein for preventing the inlet of air to the condenser system.1

In the accompanying drawings, Figure 1 is a side view of an ordinarylocomotive with my invention combined therewith, some of the parts beingshown in section; and Fig. 2 is a plan view of a detail. Figs. 3 and 4are detail views of check-valves.

In these drawings the ordinary locomotive is re resented at 1 and thetender at 2. Upon the atter is carried a supplemental boiler 3, thisbeing inclosed within suitable casings 4, and ordinary provision beingmade to prevent the radiation of heat from the supplemental boiler. Acharging connection 5 per mits the supplemental boiler to be chargedwith hot water and steam under high heat and pressure. A fire-box 6 isarranged upon the front end of the tender, this being indeendent of butadjacent to the ordinary firebox 7 of the locomotive, so that thefireman can readily attend to both fires. this supplemental fire-box awater-chamber 8 is arranged. A pipe 9 extends from the supplementalboiler 3 above the water-line thereof to the steam-chest 10 of theenginecylinders. This pipe is connected with the waterheating chamber 8by branches having valves 11 and 12 therein, respectively,

Around while a valve 13 is arranged upon the pipe 9 between thebranches. Another valve 14 is arranged in the pipe 9 between thesteamchest 10 and the said branches. If the valves 11 and 12 are closedand the valves 13 and 14 are open, the steam will pass directly from thesupplemental boiler 3 to the steamchest 10 of the locomotive.

If the valve 13 is closed and valves 11, 12, and 14 are open, the steamwill pass from the supplemental boiler 3 through the valve 11, thehot-water chamber 8, and thence by way of valves 12 and 14 and pipe 9tothe steamchest 10. If the valves 11 and 13 are closed, steam will thenpass only from the hot-water chamber 8 to the steam-chests. This latterconnection is maintained when hot water is admitted to the chamber 8from the supplemental boiler, and for this purpose a pipe 15 is providedhaving a pressure-reducer 16. A pipe 17 receives the exhaust-steam andconveys it to a condenser 18, and this condenser is preferably arrangedabove the tender of the locomotive. An air-relief pipe 19 extends fromthis condenser into a tank 20, and this pipe will carry off any airwhich is in the condensing system and any surplus steam which may not becondensed. The tank 20 acts as a mufller and is of sufiicient size toprevent any show of steam. This tank is ventilated by a pipe 21.

The valves 14 and 16 are reducing-valves, because the pressure in thesupplemental boiler is greater than that required in the steam-chest andthe cylinders.

By this system, as above described, water may be admitted either cold orhot to the chamber 8. If hot, it may be converted into steam by itsrelease into the chamber- 8 and by the heat of fire-box 6, and if coldit may be vaporized by the heat from the supplemental fire-box 6, orsteam may be admitted from the supplemental boiler 3 by way of valve 11,valve 13 being closed to the chamber 8, and from this chamber the steampasses through the pressure-reducing valve 14 to the steamchest.

I do not limit myself to supporting the supplemental boiler or fire-box6 upon the tender, as shown.

A pipe H connects the water-space of the supplemental boiler with thatof the main boiler.

Having thus described my invention, what I claim is 1. In combinationwith a locomotiveboiler, fire-box and engine-cylinders, with! theordinary steam-supply connection therel to, a supplemental boiler withpipe connections leading direct to the engine-cylinders, saidsupplemental boiler and connections comprising means for supplying steamto the cylinders independent of the main boiler, substantially asdescribed.

2. In combination with a locomotive having the ordinary cylinders andsteam-supply connections, an independent detached lirebox separate fromthe locomotive, a waterheating chamber in connection with the saidfire-box, and pipe connections from said chamber leading directly to thesteam-chest of the engine-cylinder, said water-heating chamber and pipeconnections forming means for supplying steam to the cylindersindependent of the main boiler, substantially as described.

3. In combination with a locomotive, a supplemental boiler, a fire-boxindependent of the locomotive, a water-chamber to be heated by thefire-box, steam-pipe connections between the supplemental boiler and thesaid water-chamber and pipe connections from the water-chamber to thelocomotive, the said water-chamber being thus interposed between thesupplemental boiler and the locomotive, substantially as described.

4. In combination with a locomotive, a supplemental boiler, a fire-boxindependent of the locomotive, a water-chamber to be heated by thefire-box, water-pipe connections between the supplemental boiler and thesaid water-chamber, and pipe connections from the water-chamber to thelocomotive, the said water-chamber being thus interposed between thesupplemental boiler and the locomotive, substantially as described.

5. I11 combination, the steam-chest, the fire-box independent of thelocomotive, the water-chamber in connection with the firebox, asupplemental boiler, pipe connections between the supplemental boilerand the water-chamber and between the water-chamber and the steam-chest,with branch connections and valves 11, 12 and 13 whereby the steam maypass directly from the supplemental boiler to the steamchest, or fromthe supplemental boiler to the Water-heating chamber and thence to thesteam-chest or from the Water-chamber alone, substantially as described.

6. In combination, a boiler, the steamchest, a connection from theboiler to the steamchest, a water-chamber interposed in said connectiona second connection between the boiler and the water-chamber and apressure-reducing valve in said connection, substantially as described.

7. In combination, the steam chest, a boiler, a water-heating chamber, asteam and a water pipe connection between the boiler and the chamber thesaid water-pipe having a reducing-valve therein, a pipe connecting thewater-heating chamber with the steamchest and a reducing-valve in saidconnection, substantially as described.

8. In combination, the main boiler, connected to the engine-cylinders,the supplemental boiler, a pipe H connecting them below the water-lineand a steam-pipe leading from the supplemental boiler direct to theengine-cylinders, substantially as described.

9. In combination, the main boiler, a sup- I plemental boiler, a pipeI-I connecting the main and supplemental boiler, a chamber having asteam and a Water pipe connection with the supplemental boiler, afurnace for heating the chamber and a steam-pipe connecting the chamberwith the engine-cylinders, substantially as described.

10. In combination, with the main boiler, a supplemental boiler, meanswhereby the latter may be charged with water and steam under high heatand pressure, a water-heating chamber connected With the supplementalboiler and with the engine-cylinders, and an independent fire-box forthe water-heating chamber substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

ARTHUR- PITJTISBUR.Y DODGE. Witnesses P. F. WV. RUTHER, IILLIAM C.DODGE.

